MediumMath and Logic
10R, 20B, 30G socks in 3 sizes. Min pull for matching pair?
Riddle
10R, 20B, 30G socks in 3 sizes. Min pull for matching pair?
Choose an answer
A.4 socks
B.60 socks
C.31 socks
D.10 socks
Hint: It's a word with 5 letters, starting with "1".
Answer
10 socks
Why this is the answer
There are 3 colors and 3 sizes = 9 unique combinations. In the worst case, you pull 9 different ones. The 10th must match one of the previous nine.
This riddle is filed under Math Riddles and rated Medium.